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Issue 30, 2013
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Biomineral-inspired growth of metal–organic frameworks in gelatin hydrogel matrices

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Abstract

In this work we employ a biomineral-inspired growth approach to the prototypical metal–organic frameworks (MOFs) ZIF-8 and HKUST-1 using cheap abundant non-toxic gelatin hydrogels as both a matrix and macromolecular additive for crystal growth. Both MOFs are readily prepared within the hydrogel, and while ZIF-8@gelatin composites are readily dispersed in water to form colloidal solutions stable for several months, the matrix has a significantly more pronounced effect on the crystal growth and morphology of HKUST-1 directly mirroring natural matrix-mediated biomineralisation processes. Addition of small amounts of gelatin (<1 wt%) to solvothermal syntheses of the frameworks indicates that the biomacromolecule can influence particle size, and in the case of HKUST-1 leads to mesostructured aggregates of particles that can be tuned across multiple length scales.

Graphical abstract: Biomineral-inspired growth of metal–organic frameworks in gelatin hydrogel matrices

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Supplementary files

Article information


Submitted
07 Jun 2013
Accepted
12 Jun 2013
First published
12 Jun 2013

J. Mater. Chem. B, 2013,1, 3678-3684
Article type
Paper

Biomineral-inspired growth of metal–organic frameworks in gelatin hydrogel matrices

A. Garai, W. Shepherd, J. Huo and D. Bradshaw, J. Mater. Chem. B, 2013, 1, 3678
DOI: 10.1039/C3TB20814A

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